Spectacular images of lava flowing down the slopes of an erupting Mount Etna have drawn flocks of tourists to the Italian volcano -- to the worry of local guides.

Etna, which towers over Sicily's east coast, is one of the world's most active volcanoes and frequently disrupts air traffic at Catania, the island's main airport and Italy's…

Mount Etna is one of the world's most active volcanoes and frequently disrupts air traffic at Catania